I think that "solved easily using Google" is somewhat an arbitrary statement/judgement, in the sense that there are certainly people who can easily solve your own questions even without using Google, and this is not a valid criterion for stating that it is not legitimate for you to submit these questions here (and the same applies to most of us obviously).
As far as I am concerned, one side of this forum is formation, which means that there is no "too simple" question. For people who are just starting with MATLAB/scientific computing/programming, it is often difficult to filter Google results for extracting relevant information; similarly, it is difficult to search the documentation when they have no clue about how to tackle a problem and no function/command name to start with. So I think that a more fair criterion is the amount of effort that people demonstrate doing once we give them keywords or a few explanations.
In that sense, I have a priori nothing against homework problems, especially when a person honestly declares that it is a homework, and shows that he/she took time to experiment and understand the clues/explanations that we provide. I sometimes also see people who do not understand, but who show that they implemented impressive series of experiments and spent a significant time on the material, and to me these people also deserve additional help.
What annoys me tough, is people who come with an anonymous/fake/one-shot email address, and never come back to provide feedback or to say thank you, and above all people who come back once to erase the content of their initial post. Also people who come and ask for full code to solve their project (some even insist for full code when you ask them what they have done so far: "please provide full code with most efficient techniques for face recognition in dense flow of fast moving vehicles (it must work in all weather conditions and with a cheap camera), and for sending a satellite to Pluto"). I don't remember whether emails are verified when accounts are created, but that could be a good thing to do. Also, I think that it should be mandatory to enter a license number to get a tag e.g. "license verified user" (and then we are free not to take the risk to spend too much time with unverified users), because if people knew that Mathworks knows in which institution they are working/studying, it could dissuade them to misbehave on the forum.
